MicroRNA profiles in various hepatocellular carcinoma cell lines

Morishita,Asahiro; Iwama,Hisakazu; Fujihara,Shintaro; Sakamoto,Teppei; Fujita,Koji; Tani,Joji; Miyoshi,Hisaaki; Yoneyama,Hirohito; Himoto,Takashi; Masaki,Tsutomu

doi:10.3892/ol.2016.4853

MicroRNA profiles in various hepatocellular carcinoma cell lines

Authors:
- Asahiro Morishita
- Hisakazu Iwama
- Shintaro Fujihara
- Teppei Sakamoto
- Koji Fujita
- Joji Tani
- Hisaaki Miyoshi
- Hirohito Yoneyama
- Takashi Himoto
- Tsutomu Masaki
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Affiliations: Department of Gastroenterology and Neurology, Kagawa University Faculty of Medicine, Kagawa 761‑0793, Japan, Life Science Research Center, Kagawa University Faculty of Medicine, Kagawa 761‑0793, Japan, Department of Medical Technology, Kagawa Prefectual University of Health Sciences, Kagawa 761‑0123, Japan
Published online on: July 13, 2016 https://doi.org/10.3892/ol.2016.4853
Pages: 1687-1692
Copyright: © Morishita et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Hepatocellular carcinoma (HCC) is one of the most common causes of cancer-associated mortality worldwide. Although surgery is considered the most effective treatment for patients with HCC, its indication is restricted by limited criteria and a high relapse rate following surgery; therefore, systemic chemotherapy is required for patients with advanced‑stage HCC to prolong their survival. MicroRNAs (miRNAs) are endogenous non‑coding RNAs of 18‑22 nucleotides in length. It has been reported that aberrant expression of miRNAs is a feature shared by various types of human cancer. Previous studies have indicated that the modulation of non‑coding RNAs, particularly miRNAs, may be a valuable therapeutic target for HCC. The aim of the present study was to elucidate the miRNA profiles associated with differentiation and hepatitis B virus (HBV) infection observed in HCC cell lines. The human Alex, Hep3B, HepG2, HuH1, HuH7, JHH1, JHH2, JHH5, JHH6, HLE, HLF and Li‑7 HCC cell lines were used for an miRNA array. Replicate data were analyzed following their classification into: i) Poorly‑ and well‑differentiated human HCC cells and ii) HBV‑positive and ‑negative human HCC cells. Out of the 1,719 miRNAs, 4 were found to be significantly upregulated and 52 significantly downregulated in the poorly‑differentiated cells, as compared with the well-differentiated cells. Conversely, in the HBV‑positive cells 125 miRNAs were found to be upregulated and 2 downregulated, as compared with the HBV‑negative cells. Unsupervised hierarchical clustering analysis with Pearson's correlation revealed that the miRNA expression levels were clustered both together and separately in each group. In conclusion, miRNA profile characterization based on various parameters may be a novel approach to determine the etiology of HCC.

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